Improvement in hoisting and conveying apparatus



0. T. MGINTSH. l

l tus. and Conveylng Appara Holstlng PatentedMay13,1873. N0.138,910.

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OLIVER T. MCINTOSH, OF NEW YORK, N. Y.

IMPROVEMENT IN HOISTING AND CONVEYING APPARATUS.

Specification forming part of Letters Patent No. 138,910, dated May 13,1873; application filed April 1, 1873.

To all whom it may concern:

Be it known that I, OLIVER T. MCINTOSH, of the city and State of NewYork, have invented an Improvement in Hoisting and Conveying Apparatus,of which the following is a specication:

This machine is made for drawing up any article, such as a platform,slings, bucket, or hooks for lifting any weight and conveying it alongupon an inclined railway, then lowering the weight and discharging thecontents, or otherwise delivering the weight.

Elevated and inclined railways have been employed in which the bucket israised, conveyed, and dumped; but difficulty arises in regulating thepoint at which the lowering or dumping takes place, because thedischarging mechanism, being automatic, cannot be varied with rapidity.j

In my improved hoisting and conveying mechanism the attendant is withina car upon the inclined railway, and by a brake determines the stoppingand starting of such car, and by a hand-lever and bolt the suspending orlowering of the bucket or other article f lifted, thus placing theentire control in the hands of the attendant.

In the drawing, Figure l is a vertical longitudinal section ofthehoisting mechanism and car. Fig. 2 is a plan of the same, and Fig. 8 isa cross-section.

The car is made of the frame a, with wheels b b, running upon theelevated inclined track c. At one end of the car is a box, d, in whichthe attendant sits or stands, and this box may be inclosed or covered toprotect the occupant. The brakes e e to the wheels b are operated by alever or treadle, f, within the box d, such brakes and lever areconstructed and connected in any usual manner. The hoisting-rope gisconnected at one end to a drum, and this is revolved by competent power,and stopping and starting mechanism is provided, under the control ofthe engineer, in the manner now usual in hoisting and conveyingmachinery, and further description is not necessary. The rope g leadsover the grooved wheel h, below one of the sheaves in the block k, upover the wheel or block l in the frame m, down below the other sheave ink, and up to the eye n, where itis fastened.

It is to be understood that the block lemay have a greater or lessnumber of sheaves, according to the purchase required. At the upper endof the block k there is the suspenl sion-strap o, and r is a conicalmouth for rei ceiving the same and guiding it to the bolt s. This bolt sis projected into the strap o by the spring t, and can be withdrawn bythe hand lever u when moved by the attendant.

The rollers 2 3 4 serve to lessen friction and allow the bolt s to bewithdrawn with facility. These rollers are shown in the detachedsection, Fig. 4.'

The attendant holds the car in position by the brakes e c while the ropeg is being drawn up, and the bucket of coal or other article raised byand with the block k. When completely raised the bolt s is projected topass through the strap o and suspend the weight, and simultaneously thebrakes are relieved, and the further movement of the rope g draws thecar up' the inclined track to the place of delivery of the load. Theattendant stops the car by the brake at the place where the load is tobe delivered. The bucket may be tipped and the load discharged; or, ifthe weight is to be lowered, the attendant draws the bolt s, and theengineer allows the rope g to run back as the weight is lowered. Theattendant can thus direct the movement and the stopping of the car, sothat the load can be dumped or lowered at any desired point. This is agreat advantage, especially in taking coal, ores, grain, Src., from aboat and delivering it into carts, or dumping it upon aheap when thecarts are not in place for receiving the same.

The attendant by means of the brake regulates the speed of the car inrunning back, and also prevents the car moving too far by the inertiawhen it is being drawn up.

The rope g maybe of wire, or a chain may be used in place thereof 5 andthe drum upon which the said rope or chain is wound may be either undercontrol of a separate engineer, or there may be a bar or rope withinreach of the attendant, by means of which lhe may opA erate themechanism of such drum', or a bell or gong may be employed to signal theengineer.

I claim as -my inventionl. In a hoisting and conveying apparatus,

attendant, and supported by wheels upon an elevated railway, incombination with the brakes e for the Wheels, the block 7a and rope gfor raising the Weight, and the hand-lever u and bolt s for sustainingsuch weight, as set forth.

Signed by me this 425th day of March, A.

OLIVER T. MCINTOSH.

Witnesses GEO. T. PINCKNEY, CEAS. H. SMITH.

